Counterintuitively, the curve reinforces the bar. Straight metal under pressure concentrates stress at weak points. The potbelly’s gentle arc distributes force evenly along its length—like an arch in a bridge—making the grille more resistant to bending or snapping. In storm-prone regions, this subtle geometry helps bars withstand wind and impact without sacrificing safety.
3. A Handhold for Care
For window cleaners and maintenance workers, the curve offers something rare in rigid architecture: grip. That slight protrusion becomes a foothold or handhold when scaling heights—turning a cold barrier into a tool of safety for those who tend to our buildings.
